video/backlight/tps65217_bl.c

3  * tps65217_bl.c
19 struct tps65217_bl {
26 static int tps65217_bl_enable(struct tps65217_bl *tps65217_bl)
30 	rc = tps65217_set_bits(tps65217_bl->tps, TPS65217_REG_WLEDCTRL1,
34 		dev_err(tps65217_bl->dev,
39 	tps65217_bl->is_enabled = true;
41 	dev_dbg(tps65217_bl->dev, "backlight enabled\n");
46 static int tps65217_bl_disable(struct tps65217_bl *tps65217_bl)
50 	rc = tps65217_clear_bits(tps65217_bl->tps,
55 		dev_err(tps65217_bl->dev,
60 	tps65217_bl->is_enabled = false;
62 	dev_dbg(tps65217_bl->dev, "backlight disabled\n");
69 	struct tps65217_bl *tps65217_bl = bl_get_data(bl);
74 		rc = tps65217_reg_write(tps65217_bl->tps,
79 			dev_err(tps65217_bl->dev,
84 		dev_dbg(tps65217_bl->dev, "brightness set to %d\n", brightness);
86 		if (!tps65217_bl->is_enabled)
87 			rc = tps65217_bl_enable(tps65217_bl);
89 		rc = tps65217_bl_disable(tps65217_bl);
100 static int tps65217_bl_hw_init(struct tps65217_bl *tps65217_bl,
105 	rc = tps65217_bl_disable(tps65217_bl);
112 		rc = tps65217_clear_bits(tps65217_bl->tps,
117 			dev_err(tps65217_bl->dev,
123 		dev_dbg(tps65217_bl->dev, "selected ISET1 current level\n");
129 		rc = tps65217_set_bits(tps65217_bl->tps, TPS65217_REG_WLEDCTRL1,
133 			dev_err(tps65217_bl->dev,
139 		dev_dbg(tps65217_bl->dev, "selected ISET2 current level\n");
144 		dev_err(tps65217_bl->dev,
150 	rc = tps65217_set_bits(tps65217_bl->tps,
156 		dev_err(tps65217_bl->dev,
256 	struct tps65217_bl *tps65217_bl;
264 	tps65217_bl = devm_kzalloc(&pdev->dev, sizeof(*tps65217_bl),
266 	if (tps65217_bl == NULL)
269 	tps65217_bl->tps = tps;
270 	tps65217_bl->dev = &pdev->dev;
271 	tps65217_bl->is_enabled = false;
273 	rc = tps65217_bl_hw_init(tps65217_bl, pdata);
281 	tps65217_bl->bl = devm_backlight_device_register(&pdev->dev, pdev->name,
282 						tps65217_bl->dev, tps65217_bl,
284 	if (IS_ERR(tps65217_bl->bl)) {
285 		dev_err(tps65217_bl->dev,
287 		return PTR_ERR(tps65217_bl->bl);
290 	tps65217_bl->bl->props.brightness = pdata->dft_brightness;
291 	backlight_update_status(tps65217_bl->bl);
292 	platform_set_drvdata(pdev, tps65217_bl);